<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
    // 1.795 四舍五入，保留两位 1.80
    // 1.784 四舍五入，保留两位 1.78

    const SelfUtil = {
        getFormattedData() {},
        numberObjFormat(val, precision, roundingMethod) {},
        numberArrFormat() {

        }
    }
</script>
</body>
</html>
